GET

/v1/schemas/fal/chat/openrouter%2Frouter

Accept:

kind inputactivity chathash c86120a9…extracted Jul 7, 2026version currentsource upstream spec ↗

Request body

6 properties · 2 required · 0 $defs

property	type	description	constraints
prompt*	string	Prompt to be used for the chat completion
model*	string	Name of the model to use. Charged based on actual token usage.
system_prompt	string	System prompt to provide context or instructions to the model	nullable
max_tokens	integer	This sets the upper limit for the number of tokens the model can generate in response. It won't produce more than this limit. The maximum value is the context length minus the prompt length.	n ≥ 1 · nullable
reasoning	boolean	Should reasoning be the part of the final answer.	default: false
temperature	number	This setting influences the variety in the model's responses. Lower values lead to more predictable and typical responses, while higher values encourage more diverse and less common responses. At 0, the model always gives the same response for a given input.	0 ≤ n ≤ 2 · default: 1

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"openrouter/router","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}